Laser Sintering Proppants

Investigating the Effects of Chemical Composition, Sintering …

The results showed that the proppants had the optimum overall performances when the total content of SiO2 and Al2O3 was at 85%, the S/A ratio of 1.0, with a sintering temperature of 1250℃. The heating rate and the holding time were 2.5℃/min and 90 minutes, respectively, with the addition of 3% TiO2 and 5% Fe2O3.

Basic principle, progress, and prospects of coal gangue ceramic proppants

Second, the progress of research of coal gangue ceramic proppants is summarized from the perspective of additives, and the influence of different kinds of additives on the sintering temperature and performance of proppants is discussed. Lastly, the future prospects of coal gangue ceramic proppants are presented.

Determination of loamy resources impact on granulation …

Aim of this research was verification of the impact of natural loamy resources (aluminosilicates in powder form) mixed with binder on ceramic proppants quality. Utility of the clays was estimated by their particle size distribution (PSD by laser diffraction method) and thermal stability (thermogravimetry - TGA).

Optimization design of low-density and high-strength …

This article mainly studied the effects of the following three factors: (a) milling time of bauxite, (b) milling time of feldspar, and (c) sintering temperature on the bulk density, …

A comprehensive review on proppant technologies

The objectives of this review study are to provide an overview of current proppant technologies, including different types, compositions, and shapes of proppants, new …

Laser Micro Sintering – a Versatile Instrument for the Generation …

Recently a freeform technique – Laser Micro Sintering – has been developed by which micro parts with an overall resolution of 30 μm can be produced from powder materials. The technique is a generative freeform fabrication method based on selective laser sintering; it can produce hollows and undercuts and does not afford shape-specific tools.

Preparation and characterization of quartz ceramic proppant …

Solid waste silica fume and pyrolusite powder were used to synthesize quartz ceramic proppant by pelleting and sintering to replace natural quartz sand for unconventional oil and gas exploitation. The effects of pyrolusite powder content and sintering temperature on the apparent density, breakage ratio, and acid solubility of the proppant were ...

The preparation and properties of high-strength porous …

The Archimedes method was used to measure density and porosity of porous mullite ceramics. The compressive strength of samples with dimensions of 10 × 10 × 20 mm was performed by electronic universal testing machine at a crosshead speed of 0.5 mm/min. The linear shrinkage of samples during sintering was determined by Eq. (1).

Ceramic Proppants: A Specialized Alternative to …

Ceramic proppants also boast a number of characteristics that translate to better conductivity, or the effectiveness at which the petroleum product can flow around the proppants in the rock fissure. Improved uniformity in size, shape, and …

Optimization design of low-density and high-strength ceramic proppants

One alternative to decrease the sintering temperature of ceramic proppants is the addition of sintering aid, including feldspar, 8 dolomite, 9 purple sands, 10 calcium oxide, and manganese dioxide. 11 But these aids rarely reduce the sintering temperature to below 1300°C. Another way is to add as much solid waste as possible, such as fly ash, 12– 14 coal gangue, …

Determination of loamy resources impact on granulation of …

The paper presents results of sintering proppants parameters and its influence on light ceramic proppants obtained by the mechanical granulation method. The proppants were prepared basing on a ...

Low-temperature preparation of lightweight ceramic proppants …

Ceramic proppants are usually prepared via sintering using a mixture of high-proportioned bauxite and a small quantity of other minerals as raw materials [[3], [4], [5]]. However, bauxite resources have recently become scarce because of overexploitation. Many countries have begun to restrict bauxite mining, resulting in a decline in bauxite ...

Effects of CaO addition on the properties and microstructure …

Corundum-mullite ceramic proppant was prepared by granulation and sintering with low-grade bauxite as the main raw materials and CaO as the additive mineralizer. The …

In-vitro study of Ti6Al4V alloy fabricated by laser-based …

This leads to premature failure due to wear, corrosion, and poor osseointegration. Recent advancements in laser-based additive manufacturing, particularly in direct metal laser sintering (DMLS), offer new opportunities to produce Ti6Al4V implants with tailored microstructures, mechanical properties, and biocompatibility.

Preparation and characterization of low-density mullite …

DOI: 10.1016/J.MATLET.2015.03.060 Corpus ID: 135537981; Preparation and characterization of low-density mullite-based ceramic proppant by a dynamic sintering method @article{Zhao2015PreparationAC, title={Preparation and characterization of low-density mullite-based ceramic proppant by a dynamic sintering method}, author={Jinzhou Zhao and Zuolei …

Enhancing Fracturing Proppant Performance: Methods and

The proppants that underwent sintering at a temperature of 1355 °C demonstrated superior performance, characterized by an apparent density of 2.792 g/cm 3 and a breakage …

First 1P PocketQube flight-ready manufactured entirely via laser …

Latrell turned to CRP USA for the manufacture of the entire satellite frame via laser sintering process using one material form the Windform TOP-LINE family of composite materials for laser sintering, the Carbon fiber reinforced Windform XT …

Laser Sintering by Spot and Linear Optics for Inkjet-Printed …

The implementation of the laser sintering for inkjet-printed nanoparticles and metal organic decomposition (MOD) inks on a flexible polymeric film has been analyzed in detail. A novel approach by implementing, next to a commonly 3.2 mm diameter spot laser optic, a line laser optic with a laser beam area of 2 mm × 80 mm, demonstrates the high potential of …

Preparation and characterization of high-performance …

The results revealed that at the best sintering condition (1280 °C, holding for 60 min), and a mass ratio (ODCPRs: bauxite: MnO 2 at 3:7:0.1), the well-developed granular …

Preparing high-strength and low-density proppants with oil …

To determine the effects of sintering temperature, sintering time, and sintering rate on the physical–mechanical performance of proppants and provide a reasonable level range for the design of RSM, proppants were sintered at 1280–1360 °C at a heating rate of 1–9 °C·min −1 and maintained at the highest temperature for 0.5–2.5 h.

Microwave‐sintered mullite structural ceramics based on …

To recognize the relationship between microwave input power and conventional sintering parameters and to provide a reasonable range for parameters design, proppants …

Microwave‐sintered mullite structural ceramics based on …

forming a net structure. (3) As the input powe r increased, the overfast sintering rate would reduce proppants' mechanical properties, and it was also necessary to select a reasonable sintering time to avoid o verburning. (4) When the mass ratio of MnO 2:CaO:SiC:bauxite was 2:1.5:12:84.5 and under the sintering condition of

3D of high-stiffness and high-strength glass fiber …

Compared with those conventional manufacturing processes, i.e., the injection molding or compression molding, selective laser sintering (SLS) is particularly attractive for fabricating intricate and lightweight PEEK-based components without the requirement for tooling [2]. Nevertheless, the investigation on SLS strategies for glass fiber ...

Valorization of oil‐based drilling cuttings as a substitute for …

A suitable sintering time is also necessary to ensure the densification of proppants structure. As shown in Figure 12, when the sintering time was extended from 90 min to 130 min under 925°C, the breakage ratio decreased from 13.45% to 8.67%, and the apparent density increased from 2.19 to 2.35 g/cm 3. The lowest breakage ratio under the ...

Basic principle, progress, and prospects of coal gangue …

The use of coal gangue to prepare ceramic proppants can reduce the cost of ceramic proppants and benefit environmental protection. Studies on using coal gangue to …

Controllable preparation and synthetic mechanism of mullite …

The mechanism of solidification of chromium ions in sintered ceramics was further studied. Finally, ceramic proppants were successfully prepared with high-strength spinel-corundum ceramics. At the best sintering temperature of 1320 °C, the performances were 5.08% of breakage ratio under 52 MPa and 3.03 g/cm 3 of apparent density. The use of ...

Microwave‐sintered mullite structural ceramics based on …

Once the mass ratio of bauxite:SiC:MnO 2:CaO was determined to be 84.5:12:2:1.5, the proppants' properties and structure are mainly affected by the sintering conditions, including sintering temperature, sintering time, and sintering rate, 35 which are directly correlated with the input power in the microwave sintering process. Therefore, the ...

Mullite–Silicate Proppants Based on High-Iron Bauxite and …

The suitability of microsilica as a raw material for the production of ceramic mullite–silicate proppants was assessed. The chemical and mineralogical compositions of the initial materials were studied. The mineral composition of bauxite is mainly represented by gibbsite Al(OH)3 and, to a lesser extent, kaolinite Al4[Si4O10](OH)8, with impurities of hematite and quartz. It is …

Recycling of spent Cu-based oxygen carriers into high …

One of the important findings of this study is the fact that using spent OC (after acid leaching) for the production of ultra-high-strength ceramic proppants can be even more economical than using pure α-Al 2 O 3 because of a shorter milling time (1 min) and lower sintering temperature (1400 °C).

An In Vitro Comparison of Marginal Fit of Single-Unit …

Introduction: The marginal fit of dental restorations is essential for longevity and effectiveness of fixed prostheses, particularly single-unit crowns. Direct digital scanning offers significant advantages over indirect methods, providing a non-invasive, accurate, and reproducible means to evaluate marginal fit. This study aimed to assess the marginal fit of …